TokTz-Ket-Dill -Dom-

A Class F opponent within the Dominion Tower, south-east of Shanty Pass.

Notes:

Requires completion of the TokTz-Ket-Dill quest to be fought in the Dominion Tower.
The monster is immune to most attacks until you break its armour by wielding either a rune or dragon pickaxe and attacking it until its armour breaks. After this happens, you can kill it using normal attacks.

This monster has an unavoidable attack which hits around 1/4 of your total lifepoints.

TokTz-Ket-Dill is immune to poison.
This monster's specified weakness after its armour breaks is water magic, yet is immune to spells.